Population connectivity shapes the distribution and complexity of chimpanzee cumulative culture

• 成果类型: Article
• 署名作者: Gunasekaram, Cassandra; Battiston, Federico; Sadekar, Onkar; Padilla-Iglesias, Cecilia; van Noordwijk, Maria A.; Furrer, Reinhard; Manica, Andrea; Bertranpetit, Jaume; Whiten, Andrew; van Schaik, Carel P.; Vinicius, Lucio; Migliano, Andrea Bamberg
• 署名单位: University of Zurich; University of Cambridge; University of Cambridge; Max Planck Society; University of Zurich; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC-UPF - Institut de Biologia Evolutiva (IBE); Pompeu Fabra University; University of St Andrews; University of Zurich
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-10142
• DOI: 10.1126/science.adk3381
• 发表日期: 2024-11-22
• 页码: 920-925
• 关键词: evolution; TECHNOLOGY; demography; IDENTITY; descent; package; SPREAD

摘要

Although cumulative culture is a hallmark of hominin evolution, its origins can be traced back to our common ancestor with chimpanzees. Here, we investigated the evolutionary origins of chimpanzee cumulative culture and why it remained incipient. To trace cultural transmission among the four chimpanzee subspecies, we compared population networks based on genetic markers of recent migration and shared cultural traits. We show that limited levels of group connectivity favored the emergence of a few instances of cumulative culture in chimpanzees. As in humans, cultural complexification likely happened in steps, with transmission between populations, incremental changes, and repurposing of technologies. We propose that divergence in social patterns led to increased mobility between groups in the genus Homo, resulting in irreversible dependence on cultural exchange and complexification.